Question

1. A research team is hired to investigate the prevalence of periodontal disease in a rural county with a low average socio-economic status. The team is given the task of surveying the area, and providing a brief examination of participants to correctly identify cases of periodontal disease and estimate an overall prevalence. If the team identifies an overall prevalence of above 25%, the sponsoring organization is to initiate an active campaign promoting healthy dental practice. Out of 150 participants surveyed, 30 were identified to have periodontal disease.

1. 1. Conduct a formal test for detecting if the prevalence of periodontal disease in the sample is significantly different from the minimum prevalence for intervention. Use an α=0.05. Be sure to include each of the four steps of hypothesis testing.

Answer 1